Dark

SEM
SELECT MEDICAL HOLDINGS CORP
stock NYSE

At Close

May 1, 2026 3:59:56 PM EDT

16.45USD+0.244%(+0.04)1,658,249

0.00Bid 0.00Ask 0.00Spread

Pre-market

0.00USD-100.000%(-16.41)0

After-hours

May 1, 2026 4:00:30 PM EDT

16.44USD-0.061%(-0.01)1,119

OverviewOptionsHistoricalExchange VolumeShortsMore

SEM Volume May 1, 2026

[NF]

Exchange	Day%	Volume	30D%
Off Exchange¹	39.98	662,992	48.99
NYSE	32.04	531,257	25.10
IEX	6.98	115,693	6.04
NYSE Arca	5.53	91,634	3.53
Nasdaq GSM	5.28	87,534	6.91
Cboe BZX	3.25	53,817	2.28
Cboe EDGX	2.48	41,043	2.13
Cboe BYX	2.09	34,606	1.67
NYSE National	0.93	15,467	1.21
Nasdaq BX	0.71	11,757	0.48
MEMX	0.40	6,611	0.38
Cboe EDGA	0.12	1,991	0.67
NYSE American	0.12	1,945	0.34
MIAX Pearl	0.10	1,591	0.14
Nasdaq PHLX	0.01	200	0.06
CHX	0.01	100	0.04
24X National	0.00	0	0.02
LTSE	0.00	0	0.00

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¹ A) Dark Pool or Off Exchange? B) Venues explained. C) All trades that update volume from the CTA.

SEM Nutrition Facts

0.98 servings per container

Serving size

1.69M

Calories

1.66M

% Day

% Avg

Off Exchange¹ 663K

39.98%

48.99%

NYSE 531K

32.04%

25.10%

IEX 116K

6.98%

6.04%

NYSE Arca 92K

5.53%

3.53%

Nasdaq GSM 88K

5.28%

6.91%

Cboe BZX 54K

3.25%

2.28%

Cboe EDGX 41K

2.48%

2.13%

Cboe BYX 35K

2.09%

1.67%

NYSE National 15K

0.93%

1.21%

Nasdaq BX 12K

0.71%

0.48%

MEMX 7K

0.40%

0.38%

Cboe EDGA 2K

0.12%

0.67%

NYSE American 2K

0.12%

0.34%

MIAX Pearl 2K

0.10%

0.14%

Nasdaq PHLX 200

0.01%

0.06%

CHX 100

0.01%

0.04%

24X National 0

0.00%

0.02%

LTSE 0

0.00%

¹ A) Dark Pool or Off Exchange? B) Venues explained. C) All trades that update volume from the CTA.

chartexchange.com

SEM Off Exchange & Dark Pool Summary

Today's Off Exchange & Dark Pool volume is 662,992, which is 39.98% of today's total volume.
Today's Lit volume is 995,246, which is 60.02%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 48.99%.
The average Lit volume has been 51.01%.

SEM Volume by Exchange

Off Exchange

NYSE

IEX

NYSE Arca

Nasdaq GSM

Cboe BZX

Cboe EDGX

Cboe BYX

NYSE National

Nasdaq BX

MEMX